Dozens of demonstrators remain in downtown Seattle's Westlake Park on Thursday despite efforts to force them to move to City Hall.

They'll get reinforcement when union members join them for a rally for jobs at 10:30 a.m.

The Occupy Seattle group said demonstrators voted Wednesday night to occupy Westlake Park indefinitely and to plan a mass occupation of the park on Saturday with tents, as part of the nationwide demonstration against corporate power.

Police arrested at least one person Wednesday night who refused to remove a tent. Police arrested two dozen people last week after refusing to remove tents.

Seattle Mayor Mike McGinn has invited demonstrators to camp at City Hall plaza. He says the city will enforce rules against camping and unpermitted activity in Westlake Park in the retail core.